Option three is he makes a pitch, which she will likely refuse. But at least then it'd be known, and over time, they might grow desperate enough to come back to it. This will raise his profile, but that is probably unavoidable at this point.
Option four, Beltare seizes the initiative, and tries to remove him from Earth for a thorough examination. That would be bad. For everyone. He'll need to have a plan for dealing with such an eventuality, and how to advance his mission even if the worst happens. He'll also need to make sure Clive and Cheryn remain safe. Which gives him a thought.
“Please set a two-layer passcode. Layer one, Clive's DNA. Layer two, Cheryn's DNA. Only someone who really knows what is going on would have a hope of figuring that out.”
He swears they actually sound like they approve of his choice. That's one problem solved.
He gets up to start exercising. He is nearing his peak physical condition. He hasn't been this athletically endowed in years, but he is afraid he'll need it in the not too distant future. After about half an hour his symbiots get back to him.